Core tip



Nov. 3,1925.

E. M. ALLAN'v CORE TIP Fled'llay 12. 1925 INVENTQR mi Il'lg' l IU' III lill i l Patented Nov. 3, 1925.

UNITED STATES EWEN M. ALLAN, 0F SAULT STE. MARIE, ONTARIO, CANADA.

COR-E TIP.

Application led May 12, 1925.

Y 1o alt whom it may 00a-cem:

Be .it known that I, EwnN M. ALLAN, ot Sault Ste. Marie, in the District of Algoma, Province of Ontario, Canada, a British subject, have invented certain new and useful Improvements in Core Tips, of which the following is a specification.

This invention relates to the metal tips which are applied to the ends of cores on which newsprint and other papers are wound. rThese cores are usually manufactured of heavy cardboard but are not of suf'- iicient strength of themselves to withstand the strain when they are keyed on the winding shaft, and consequently it has been customary to provide the ends of the core with metal reinforcements to take the engagement with the key.

The object of the present invention is therefore to devise a tip in which the operations of placing the tip in position on the core and removing it therefrom are greatly simplified, the construction being such that they may be effected without dam'- age to the tip. y

I attain my object by means of the constructions hereinafter described and illustrated in the accompanying drawings in which- F ig. l is a side elevation of the end of a core showing my improved tip applied thereto;

Fig. 2 a plan view of the under side of the tip; and

Fig. 3 a cross section through the tip.

The tip l, which is formed of drawn and rolled sheet metal, is annular in form and is provided at its inner and outer edges with the flanges 2 and 3 forming between them a channel in which the end of the core l is adapted to be received.

On the channel surface of the outer flange 3 is formed, by rolling, a spiral rib 5, preferably V-shaped in section. This rib comr mences at the bottom of the flange 8 and extends once around the tip gradually rising at the same time until it reaches a point adjacent the top of the flange. Tt will be evident, of course, that the rib may extend around the tip more than a single time, how- Seral No. 29,849.

ever, or that more than one rib may be employed.

The tip is securedV in place on the end of the core by simply turning the tip relative to the core, the ribacting as a thread, and gradually working the tip on to the core until the end of the core reaches the bottom of the channel.

Tt is necessary, however, to provide means for preventing the unscrewing of the tip from the core when the core is on the winding roll, and I therefore form a hole in the outer flange l and through this hole a screw 6 is driven into the core. With this screw in position, the unscrewing of the tip is prevented.

The tip is provided with a notch 7 in which the key which locks the core to the shaft may engage.

After the roll of paper has been wound on the core, and removed from the winding ma chine, it is a simple matter to remove the tips from the core, all that is necessary being to remove the screw 6 and unscrew the tip from the end of the core.

It will be evident, of course, that the rib may he formed on the liange 3 instead of the flange 2, or both ianges may be provided with ribs.4 It is also evident that more than one screw 6 may be employed.

From the above description it will be seen that I have devised a core tip which will satisfactorily attain the object of my invention as set out in the preamble of this specification. Y

What I claim is:

1. An integrally formed core tip of drawn and rolledsheet metal comprising an annular member provided with a flange at its inner edge and a flange at its outer edge, said lianges forming between them a channel in which the end of the core is adapted to he received, one of said flanges being provided with a spiral rib roller thereon commencing at a point adj acentthe edge of its channel side whereby, by rotating the tip relative to the core, the tip may be worked on or off the core.

2. An integrally formed core tip of drawn and rolled sheet metal comprising an annular member provided with a flange at its inner edge and a flange at its outer edge, said flanges forming between the1n a channel in which the end of the core is adapted to be received, the outer liange being provided with a spiral rib rolled thereon commencing at a point adjacent the edge of its channel Side whereby, by rotating the tip relative to the core, the tip may be Worked on o1.- oil the core.

Signed at Sault Ste. Marie, Cana-da, this 25th day of April, A. D., 1925.

EWEN M. ALLAN. 

